Loose-leaf book



LOOSE LEAF BOOK.

APPLICATIO FILE .3,1921. 1 1,389,658.. PatentedSept. 6,1921,

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UNITED .STATES P ATE N FFI c THOMAS E. HEETEB, OF ST. LOUIS, MISSOURI.

LOOSE-LEAF BOOK.

Specification of Letters Patent.

Patented Sept. 6, 1921.

Application filed March 3, 1921. Serial No. 449,307

' in loose leaf book construction.

An object of the invention is to provide a novel loose leaf post that may be readily attached to the book back or cover, and which will beheld rigidly in place for sup porting the loose leaves of the book.

Another object of the invention is to provide a loose leaf post adapted to be mounted in an opening in the back or cover of'the book and permanently riveted in .place, leaving a smooth outer surface. V

Additional features and advantages of the construction will be readily apparent from the following detailed description thereof taken in connection with the accompanying drawing, in which c Figure 1 is an enlarged view of the post in vertical section showing the relation of the parts before being riveted in place, and illustrating also the assembling tool.

Fig. 2 is a view of the same parts after the riveting operation has been performed.

Fig. 3 isv a vertical section of the post rivet in place assembled with the leaf retaining screw.

Fig. 1; is a plan View of the post.

In the embodiment of the invention illustrated in the drawing 1 indicates a section of the book back or cover which is perforated as indicated at 2 for the reception of the post. The post proper consists of a cylindrical portion 3 having an internally threaded socket 4 for the reception of the leaf retaining screw 5 that threads into the socket, the screw being provided with a head 6 having its outer periphery knurled or roughened for manual engagement in securing the retaining screw in place.

The post has a base section 7 having a diameter in excess of the cylindrical portion 3 of the post, the shoulder at the juncture of the base section and the cylindrical portion 8 being under-cut as indicated at 8. The bottom of the base portion 7 has a circular flange 9 in which is formed up-turned tongues 10 the tongues 10 being preferably spaced at ninety degree angles around the flange. The diameter of the base portion 7 surface of the book' back or covelxp is made of a dimension so that it will' fit,

snugly intothe perforations' 'in the book back or cover. Thus, when the tongues are forced into the material of the book back or cover by the riveting operation, herein more fully described, the .post will be "prevented from turning in the perforation and will be held perfectly rigid in association with the cover.

p In assembling the post with the bookback or cover the post is inserted through the cover as illustratedin Fig. l, the up-turned tongues'bearing against the outer surface of the book back or cover, andftheshoulder at the juncture of the cylindrical portion 3 and the base portion 7fbeing substantially in the same horizontal plane with the upper A washer 11 is then fitted in place above the shoulder, the washer 11 having an opening 12' therein which has downwardly sloping side walls. The downward slope of the side walls requlres no special preparation of the washeras it results from the normal'punchmg actlon of a punch press,but the slope of the walls is advantageous in accomplishing a more satisfactoryriveted connection of the washer with the base portion of. the post.

When the parts are thus assembled an assembling tool, which consists of a handle 13 and a base section 14 cut out to conform with the contour of the shank and to fit over the edge of the washer, is adjusted in place as shown in Fig. 1. The assembling tool is of a weight suflieient so that a hammered blow may be struck with the tool, which results in forcing downward the washer over the base portion 7 ofthe post, thereby drawing the tongues 10 upwardly into the book back or cover and over-turning the edges of the shoulder against the side walls of the open ing 12 in the washer, causing an interlockthe book back or cover may be performed 1 with facility and the resulting attachment between the postand cover is rigid so that the post may not be readily torn out of place inasmuch as the edges of the perforations through the book back or cover are reinforced by the flange 9 and the washer 11.

I- am aware that the invention may be modified without departing from the spirit and scope thereof. I do not limit'myself, therefore, to the exact construction and arrangement shown, but what I claim and de sire to secure by Letters Patent, is

1. A loose leaf post, comprising a cylindrical section, an enlarged cylindrical base adapted to be received in a perforation in the book back or cover, a flange on the base, and a washer adapted to be'riveted in connection with the base by the over-turning of the edges of the shoulder at the juncture of the base and the cylindrical portion.

2. A loose leaf post, comprising a leaf receiving portion, means in said portion for engaging a leaf retaining screw, a cylindrical base of a diameter in excess of the leaf retaining portion forming an under-cut shoulder at the juncture of the base and leaf receiving portion, an enlarged flange in connection with the base having upturned tongues, and a washer fitting over the post on the side opposite to said flange and being adapted to be riveted in connection with the base portion of the post by over-turning the edges on the undercut shoulder.

3. A loose leaf post, comprising a leaf receiving portion, an enlarged base adapted to be inserted through a perforation in the book back, a flange on the base portion having means for preventing the turning of the post in the perforation, and a washer hav ing downwardly inclined walls adapted to fit over the upper edge of the base portion and to be riveted in connection therewith by the'over-turning of the metal of the base portion.

4:. A loose leaf post, comprising a base section adapted to be inserted in a perforation in a book cover, a retaining flange in connection with the base portion. to bear against and reinforce the outer side of the book cover around the perforation, tongues on said flange to engage in the book cover, a washer on the base section, a pressed .portion on the base section riveting the washer in place, a leaf receiving portion rising from the base, and means for holding a leaf retaining screw in connection with the leaf receiving portion.

THOMAS E; HEETER. 

